Using these batteries on a regular basis? Why not take a look at the bulk boxes of 20. Energizer Advanced Alkaline Batteries. Energizer Advanced is a newly formulated range of Alkaline batteries have been designed with today's most popular devices in mind. Thanks to the cutting edge Alkaline construction of the Advanced series your devices keep going non-stop. Meticulous research & refinement which has gone into developing the Energizer Advanced series. Meaning your products benefit from up to 20% life increase over previous lines, such as Energizer Max. The Advanced series are also well suited to weight-dependant applications thanks to the fact they are 25% lighter than conventional cells. Safety of the cells has also played a key role in the design of the Advanced series. Providing leak-proof construction protecting the devices in which they are running, and more importantly, you. Suitable for use in a wide variety of products, such as smoke detectors, digital cameras, personal entertainment devices. Offered in a wide range of cells sizes, such as C(RS Stock number < 914-5073') 914-5073/ typical), D (RS Stock number < 914-5045') 914-5045/ Typical) & 9V ( RS Stock Number < 914-5064') 914-5064/ typical).